Aren't the aps headers well documented for having issues with cracking?

That's the unfortunate fact. However...

I knew what I wanted in an EL header, and found it in the APS. But I didn't stop there, I got their wrap system. It cost as much as some header systems, and was a major pain to install correctly. The finished system was what APS intended, not the header alone. Given the cost, and PITA to install, not to mention covering all that bling... it's my opinion a bunch of people didn't do the wrap. And to me, there is the source of the failures...(not only in APS's headers, but most headers).

The APS header system I installed more than four years ago is still flawless. I don't own it anymore, but it's local and owned by a friend. Actually, the entire car is still working perfectly.